feat: Integrate Bitget for Rate Fetching & Median Calculation Across Multiple Providers #425
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,191 @@ | ||
| package utils | ||
|
|
||
| import ( | ||
| "fmt" | ||
|
|
||
| "strings" | ||
| "time" | ||
|
|
||
| fastshot "github.com/opus-domini/fast-shot" | ||
| "github.com/shopspring/decimal" | ||
| ) | ||
|
|
||
| var ( | ||
| BitgetAPIURL = "https://api.bitget.com" | ||
| BinanceAPIURL = "https://api.binance.com" | ||
| QuidaxAPIURL = "https://www.quidax.com/api/v1" | ||
| ) | ||
|
|
||
| // fetchExternalRate fetches the external rate for a fiat currency | ||
| func FetchExternalRate(currency string) (decimal.Decimal, error) { | ||
| currency = strings.ToUpper(currency) | ||
| supportedCurrencies := []string{"KES", "NGN", "GHS", "TZS", "UGX", "XOF"} | ||
| isSupported := false | ||
| for _, supported := range supportedCurrencies { | ||
| if currency == supported { | ||
| isSupported = true | ||
| break | ||
| } | ||
| } | ||
| if !isSupported { | ||
| return decimal.Zero, fmt.Errorf("ComputeMarketRate: currency not supported") | ||
| } | ||
|
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| var prices []decimal.Decimal | ||
|
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| // Fetch rates based on currency | ||
| if currency == "NGN" { | ||
| quidaxRate, err := FetchQuidaxRate(currency) | ||
| if err == nil { | ||
| prices = append(prices, quidaxRate) | ||
| } | ||
| } else { | ||
| binanceRate, err := FetchBinanceRate(currency) | ||
| if err == nil { | ||
| prices = append(prices, binanceRate) | ||
| } | ||
| } | ||
|
|
||
| // Fetch Bitget rate for all supported currencies | ||
| bitgetRate, err := FetchBitgetRate(currency) | ||
| if err == nil { | ||
| prices = append(prices, bitgetRate) | ||
| } | ||
|
|
||
| if len(prices) == 0 { | ||
| return decimal.Zero, fmt.Errorf("ComputeMarketRate: no valid rates found") | ||
| } | ||
|
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| // Return the median price | ||
| return Median(prices), nil | ||
| } | ||
|
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| // FetchQuidaxRate fetches the USDT exchange rate from Quidax (NGN only) | ||
| func FetchQuidaxRate(currency string) (decimal.Decimal, error) { | ||
| url := fmt.Sprintf("/api/v1/markets/tickers/usdt%s", strings.ToLower(currency)) | ||
|
|
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| res, err := fastshot.NewClient(QuidaxAPIURL). | ||
| Config().SetTimeout(30*time.Second). | ||
| Build().GET(url). | ||
| Retry().Set(3, 5*time.Second). | ||
| Send() | ||
| if err != nil { | ||
| return decimal.Zero, fmt.Errorf("FetchQuidaxRate: %w", err) | ||
| } | ||
|
|
||
| data, err := ParseJSONResponse(res.RawResponse) | ||
| if err != nil { | ||
| return decimal.Zero, fmt.Errorf("FetchQuidaxRate: %w", err) | ||
| } | ||
|
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||
| price, err := decimal.NewFromString(data["data"].(map[string]interface{})["ticker"].(map[string]interface{})["buy"].(string)) | ||
| if err != nil { | ||
| return decimal.Zero, fmt.Errorf("FetchQuidaxRate: %w", err) | ||
| } | ||
|
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||
| return price, nil | ||
| } | ||
|
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| // FetchBinanceRate fetches the median USDT exchange rate from Binance P2P | ||
| func FetchBinanceRate(currency string) (decimal.Decimal, error) { | ||
|
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| res, err := fastshot.NewClient(BinanceAPIURL). | ||
| Config().SetTimeout(30*time.Second). | ||
| Header().Add("Content-Type", "application/json"). | ||
| Build().POST("/bapi/c2c/v2/friendly/c2c/adv/search"). | ||
| Retry().Set(3, 5*time.Second). | ||
| Body().AsJSON(map[string]interface{}{ | ||
| "asset": "USDT", | ||
| "fiat": currency, | ||
| "tradeType": "SELL", | ||
| "page": 1, | ||
| "rows": 20, | ||
| }). | ||
| Send() | ||
| if err != nil { | ||
| return decimal.Zero, fmt.Errorf("FetchBinanceRate: %w", err) | ||
| } | ||
|
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| resData, err := ParseJSONResponse(res.RawResponse) | ||
| if err != nil { | ||
| return decimal.Zero, fmt.Errorf("FetchBinanceRate: %w", err) | ||
| } | ||
|
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| data, ok := resData["data"].([]interface{}) | ||
| if !ok || len(data) == 0 { | ||
| return decimal.Zero, fmt.Errorf("FetchBinanceRate: no data in response") | ||
| } | ||
|
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| var prices []decimal.Decimal | ||
| for _, item := range data { | ||
| adv, ok := item.(map[string]interface{})["adv"].(map[string]interface{}) | ||
| if !ok { | ||
| continue | ||
| } | ||
|
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| price, err := decimal.NewFromString(adv["price"].(string)) | ||
| if err != nil { | ||
| continue | ||
| } | ||
|
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| prices = append(prices, price) | ||
| } | ||
|
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| if len(prices) == 0 { | ||
| return decimal.Zero, fmt.Errorf("FetchBinanceRate: no valid prices found") | ||
| } | ||
|
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| return Median(prices), nil | ||
| } | ||
|
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| // FetchBitgetRate fetches the median USDT exchange rate from Bitget P2P | ||
| func FetchBitgetRate(currency string) (decimal.Decimal, error) { | ||
|
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| res, err := fastshot.NewClient(BitgetAPIURL). | ||
| Config().SetTimeout(30*time.Second). | ||
| Header().Add("Content-Type", "application/json"). | ||
| Build().POST("/api/v2/p2p/adv/search"). | ||
| Retry().Set(3, 5*time.Second). | ||
|
Comment on lines
+147
to
+148
There was a problem hiding this comment. which documentation are you using for Bitget? There was a problem hiding this comment. I thought I had already mentioned this earlier, but the Bitget endpoint you provided in the user story https://www.bitget.com/api-doc/common/p2p/Get-P2P-Order-List isn’t working I’m getting the following error message: There was a problem hiding this comment. |
||
| Body().AsJSON(map[string]interface{}{ | ||
| "tokenId": "USDT", | ||
| "fiat": currency, | ||
| "side": "sell", | ||
| "page": 1, | ||
| "size": 20, | ||
| }). | ||
| Send() | ||
| if err != nil { | ||
| return decimal.Zero, fmt.Errorf("FetchBitgetRate: %w", err) | ||
| } | ||
|
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| resData, err := ParseJSONResponse(res.RawResponse) | ||
| if err != nil { | ||
| return decimal.Zero, fmt.Errorf("FetchBitgetRate: %w", err) | ||
| } | ||
|
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| data, ok := resData["data"].([]interface{}) | ||
| if !ok || len(data) == 0 { | ||
| return decimal.Zero, fmt.Errorf("FetchBitgetRate: no data in response") | ||
| } | ||
|
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| var prices []decimal.Decimal | ||
| for _, item := range data { | ||
| adv, ok := item.(map[string]interface{})["price"].(string) | ||
| if !ok { | ||
| continue | ||
| } | ||
|
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| price, err := decimal.NewFromString(adv) | ||
| if err != nil { | ||
| continue | ||
| } | ||
|
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| prices = append(prices, price) | ||
| } | ||
|
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| if len(prices) == 0 { | ||
| return decimal.Zero, fmt.Errorf("FetchBitgetRate: no valid prices found") | ||
| } | ||
|
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| return Median(prices), nil | ||
| } | ||
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aren't some extra auth headers required?